Re: 1.25 eMac running in safe mode.
Well tonight I tried this fix, proposed by Sri and IT WORKS BY GAD! Any users of British keyboards will find the backtick ` next to the letter Z on the keyboard BTW. The eMac now starts fine, and runs well. I tried looking at a WMV file using VLC and it runs but doesn't show any video, so I guess that needs the Radeon chip to be active. Quicktime however seems to work OK on Quicktime files. Youtube seems to run adequately, even in full screen mode. DVD player however doesn't work, saying that A valid video device could not be found for playback [-70017] I also tried a video CD (remember those?) which will play in VLC but again no video. I will encourage my efriend to overcome her technofear and see how it works for her. Thanks again Sri for sharing this with us. Dan. I had this same problem on a 1.25ghz G4 emac. The bad caps are on a circuit that connects to the Radeon chip, and it's only when the Radeon chip is active that you get the errors and random freezes. (It gets worse once the chip heats up, which is why you can generally use it for 5-10 minutes after a cold boot but see it freeze a lot faster on a reboot.) When you're in safe mode, OS X emulates all graphic functions in software; since the Radeon chip doesn't get activated, the eMac works fine. If you don't want to de/resolder the caps on the logic board, the quick fix (that I used for YEARS) is as follows: Boot to Single User Mode (hold down Command-S while booting) run the following commands: (return after each line) -- fsck -ay mount -uw / cd /System/Library/Extensions/ tar cvf ATI.tar `ls|grep ATI` rm -rf `ls|grep ATI` reboot -- (Double check when you run these, the tar and rm lines have backticks, the key to the left of 1, not apostrophes!) What this does is archive and delete the kernel extensions that initialize and load Radeon chip support into OS X. Without those support extensions, OS X goes to a fallback mode and emulates video functions in software (just like safe mode). This is notably slower, but since it never uses the Radeon chip it should be completely stable. You have to re run those commands every time you install an update (OS X will notice the extensions are missing and replace them). Hope this is helpful. I came up with this as an interim measure and ended up leaving it that way for two years. :) -sri -- You received this message because you are a member of G-Group, a group for those using G3, G4, and G5 desktop Macs - with a particular focus on Power Macs. The list FAQ is at http://lowendmac.com/lists/g-list.shtml and our netiquette guide is at http://www.lowendmac.com/lists/netiquette.shtml To post to this group, send email to g3-5-list@googlegroups.com For more options, visit this group at http://groups.google.com/group/g3-5-list To unsubscribe from this group, send email to g3-5-list+unsubscribegooglegroups.com or reply to this email with the words REMOVE ME as the subject.
Re: 1.25 eMac running in safe mode.
Hi Sri... That's really useful information you give me there - I was wondering why the beast is so docile in safe mode, when it totally hangs in normal boot! I shall definitely play with this when I've cleared a little space on the bench for it: it's been put out of the way for now (man are those things heavy to lift around!) (Also I'm currently wrestling with the Quicksilver I added to the fleet last weekend - this runs fine but when it is turned off it sulks and takes an awful lot of button presses before it gets further than a bong and an instant shutdown - I will be starting a separate thread for this LOL!) I shall also pass these details on to the person mentioned in the OP, she may wish to try this too, since she (like me) doesn't like throwing usable kit away! Although, as I mentioned, I bought this eMac with the intention of parting it out. (which will eventually happen - I have 7 emacs altogether: one has a faulty IVAD cable, one is totally dead AFAIK, one is on loan to a friend, one is dedicated to playing R! DVD's, and the other three are fully functional, including a 1.42 that is my second-fastest Mac!) , . I like the idea of being able to use this one with relatively full functionality just to see how it copes! I will report back when I've done this. All the best, Dan. On Mar 16, 6:55 pm, Sri srigu...@tulanealumni.net wrote: Hi Dan, I had this same problem on a 1.25ghz G4 emac. The bad caps are on a circuit that connects to the Radeon chip, and it's only when the Radeon chip is active that you get the errors and random freezes. (It gets worse once the chip heats up, which is why you can generally use it for 5-10 minutes after a cold boot but see it freeze a lot faster on a reboot.) When you're in safe mode, OS X emulates all graphic functions in software; since the Radeon chip doesn't get activated, the eMac works fine. If you don't want to de/resolder the caps on the logic board, the quick fix (that I used for YEARS) is as follows: Boot to Single User Mode (hold down Command-S while booting) run the following commands: (return after each line) -- fsck -ay mount -uw / cd /System/Library/Extensions/ tar cvf ATI.tar `ls|grep ATI` rm -rf `ls|grep ATI` reboot -- (Double check when you run these, the tar and rm lines have backticks, the key to the left of 1, not apostrophes!) What this does is archive and delete the kernel extensions that initialize and load Radeon chip support into OS X. Without those support extensions, OS X goes to a fallback mode and emulates video functions in software (just like safe mode). This is notably slower, but since it never uses the Radeon chip it should be completely stable. You have to re run those commands every time you install an update (OS X will notice the extensions are missing and replace them). Hope this is helpful. I came up with this as an interim measure and ended up leaving it that way for two years. :) -sri On Mar 3, 8:19 pm, Dan dantear...@gmail.com wrote: -- You received this message because you are a member of G-Group, a group for those using G3, G4, and G5 desktop Macs - with a particular focus on Power Macs. The list FAQ is at http://lowendmac.com/lists/g-list.shtml and our netiquette guide is at http://www.lowendmac.com/lists/netiquette.shtml To post to this group, send email to g3-5-list@googlegroups.com For more options, visit this group at http://groups.google.com/group/g3-5-list To unsubscribe from this group, send email to g3-5-list+unsubscribegooglegroups.com or reply to this email with the words REMOVE ME as the subject.
Re: 1.25 eMac running in safe mode.
Hi Dan, I had this same problem on a 1.25ghz G4 emac. The bad caps are on a circuit that connects to the Radeon chip, and it's only when the Radeon chip is active that you get the errors and random freezes. (It gets worse once the chip heats up, which is why you can generally use it for 5-10 minutes after a cold boot but see it freeze a lot faster on a reboot.) When you're in safe mode, OS X emulates all graphic functions in software; since the Radeon chip doesn't get activated, the eMac works fine. If you don't want to de/resolder the caps on the logic board, the quick fix (that I used for YEARS) is as follows: Boot to Single User Mode (hold down Command-S while booting) run the following commands: (return after each line) -- fsck -ay mount -uw / cd /System/Library/Extensions/ tar cvf ATI.tar `ls|grep ATI` rm -rf `ls|grep ATI` reboot -- (Double check when you run these, the tar and rm lines have backticks, the key to the left of 1, not apostrophes!) What this does is archive and delete the kernel extensions that initialize and load Radeon chip support into OS X. Without those support extensions, OS X goes to a fallback mode and emulates video functions in software (just like safe mode). This is notably slower, but since it never uses the Radeon chip it should be completely stable. You have to re run those commands every time you install an update (OS X will notice the extensions are missing and replace them). Hope this is helpful. I came up with this as an interim measure and ended up leaving it that way for two years. :) -sri On Mar 3, 8:19 pm, Dan dantear...@gmail.com wrote: At 11:51 PM + 3/3/2010, Dan Stobbs wrote: eMac memory? Does it bong? Does it pass AHT? While I can wield a soldering iron I'm not intending to repair it but I've been playing with it as a result of email conversations with an ebayer who had one up for sale. She said that hers will surf in safe mode, so I dug mine out with a view to trying this out. Safe Mode is a restricted/limited environment. Many drivers are not loaded. Many services are not running. It is meant as a debug/repair type mode, not for regular use. Running as you suggest is the equivalent of driving your car on the rims, with the top down, in a thunderstorm. It will get you home, in a pinch, but you will get wet and perhaps fried on the way. So now I have an eMac running 10.4.11, and in safe mode it seems quite happy. Trying to boot it normally, it sometimes freezes at 'Starting OSX', sometimes gets as far as a desktop, but then the mouse freezes - basically, as expected, no functionality. Look in the system log to see what's failing. Try booting in Verbose Mode, to see how far the boot process is getting. - Dan. -- - Psychoceramic Emeritus; South Jersey, USA, Earth. -- You received this message because you are a member of G-Group, a group for those using G3, G4, and G5 desktop Macs - with a particular focus on Power Macs. The list FAQ is at http://lowendmac.com/lists/g-list.shtml and our netiquette guide is at http://www.lowendmac.com/lists/netiquette.shtml To post to this group, send email to g3-5-list@googlegroups.com For more options, visit this group at http://groups.google.com/group/g3-5-list
Re: 1.25 eMac running in safe mode.
Does it pass AHT? Well I finally ran to earth my Apple Hardware test disc for eMac. Unfortunately the eMac it came with was a 1GHz or earlier (SW version 1.2.2s/n 691-4177-A) so when I restarted with the CD it said that it could not run and offered me a restart. So no further on. -- You received this message because you are a member of G-Group, a group for those using G3, G4, and G5 desktop Macs - with a particular focus on Power Macs. The list FAQ is athttp://lowendmac.com/lists/g-list.shtmland our netiquette guide is athttp://www.lowendmac.com/lists/netiquette.shtml To post to this group, send email to g3-5-list@googlegroups.com For more options, visit this group at http://groups.google.com/group/g3-5-list -- You received this message because you are a member of G-Group, a group for those using G3, G4, and G5 desktop Macs - with a particular focus on Power Macs. The list FAQ is at http://lowendmac.com/lists/g-list.shtml and our netiquette guide is at http://www.lowendmac.com/lists/netiquette.shtml To post to this group, send email to g3-5-list@googlegroups.com For more options, visit this group at http://groups.google.com/group/g3-5-list
Re: 1.25 eMac running in safe mode.
Does it pass AHT? Well I finally ran to earth my Apple Hardware test disc for eMac. Unfortunately the eMac it came with was a 1GHz or earlier (SW version 1.2.2s/n 691-4177-A) so when I restarted with the CD it said that it could not run and offered me a restart. So no further on. -- You received this message because you are a member of G-Group, a group for those using G3, G4, and G5 desktop Macs - with a particular focus on Power Macs. The list FAQ is athttp://lowendmac.com/lists/g-list.shtmland our netiquette guide is athttp://www.lowendmac.com/lists/netiquette.shtml To post to this group, send email to g3-5-list@googlegroups.com For more options, visit this group at http://groups.google.com/group/g3-5-list -- You received this message because you are a member of G-Group, a group for those using G3, G4, and G5 desktop Macs - with a particular focus on Power Macs. The list FAQ is at http://lowendmac.com/lists/g-list.shtml and our netiquette guide is at http://www.lowendmac.com/lists/netiquette.shtml To post to this group, send email to g3-5-list@googlegroups.com For more options, visit this group at http://groups.google.com/group/g3-5-list
Re: 1.25 eMac running in safe mode.
On 4 March 2010 01:19, Dan dantear...@gmail.com wrote: At 11:51 PM + 3/3/2010, Dan Stobbs wrote: eMac memory? 512MB Does it bong? Yes. Does it pass AHT? Didn't occur to me to try that - good one -I've got several AHT disks in a box somewhere - almost certainly got a couple of eMac ones as I have 6 or seven eMacs (don't ask! - two of them were bought spares/repair so I could learn how to take them apart - one has defective IVAD cable - planning to use cable from the totally dead one to fix that when I get space on bench clear! *While I can wield a soldering iron I'm not intending to repair it but I've been playing with it as a result of email conversations with an ebayer who had one up for sale. She said that hers will surf in safe mode, so I dug mine out with a view to trying this out.* Safe Mode is a restricted/limited environment. Many drivers are not loaded. Many services are not running. It is meant as a debug/repair type mode, not for regular use. Running as you suggest is the equivalent of driving your car on the rims, with the top down, in a thunderstorm. It will get you home, in a pinch, but you will get wet and perhaps fried on the way. Fair comment, although IMHO it seems a lot more functional than I remember 'Safe Mode' in Windoze being. Obviously (?) sound and video drivers not being loaded - no VLC functionality but Neo Office seems to work OK. My correspondent is using hers to surf and apparently findin it satisfactory although without UTube functionality. . *So now I have an eMac running 10.4.11, and in safe mode it seems quite happy. Trying to boot it normally, it sometimes freezes at 'Starting OSX', sometimes gets as far as a desktop, but then the mouse freezes - basically, as expected, no functionality.* Look in the system log to see what's failing. OK. System log looked at and saved. But that system log is from Safe boot. So I thought I'd reboot, allowing normal boot until it hung, and then restart in TDM so I could access log via my G4 lampshade. Did this and I found references to my Wacom Bamboo tablet, which I've recently installed on the G4! So I disconnected FW lead and rebooted the eMac. It got as far as the desktop this time and I moved the mouse onto the Apple menu which opened, and then froze with a spinning pinball.Turned off eMac, restarted in TDM and then connected FW lead and went drilling for logs in 1.25eMac/users/myfolder/library/logs. This got me to disk utility log. Clicking further got me to system log which I attempted to copy to the clipboard for study in textedit - I got nearly to the bottom and then it vanished. Before I try again am I looking in the right place? Try booting in Verbose Mode, to see how far the boot process is getting. Tried that already before I posted. Unfortunately it doesn't stay on screen long enough to read it before it goes to colour screen!. Is there a way of pausing the boot process to allow me to read it? - Dan. -- - Psychoceramic Emeritus; South Jersey, USA, Earth. -- You received this message because you are a member of G-Group, a group for those using G3, G4, and G5 desktop Macs - with a particular focus on Power Macs. The list FAQ is at http://lowendmac.com/lists/g-list.shtml and our netiquette guide is at http://www.lowendmac.com/lists/netiquette.shtml To post to this group, send email to g3-5-list@googlegroups.com For more options, visit this group at http://groups.google.com/group/g3-5-list -- You received this message because you are a member of G-Group, a group for those using G3, G4, and G5 desktop Macs - with a particular focus on Power Macs. The list FAQ is at http://lowendmac.com/lists/g-list.shtml and our netiquette guide is at http://www.lowendmac.com/lists/netiquette.shtml To post to this group, send email to g3-5-list@googlegroups.com For more options, visit this group at http://groups.google.com/group/g3-5-list
